[CASSANDRA-4871] get_paged_slice does not obey SlicePredicate

• Type: New Feature
• Status: Resolved
• Priority: Low
• Resolution: Cannot Reproduce
• Component/s: Legacy/CQL
• Assignee: Unassigned
• Reporter: Scott Fines

Reviewers

Piotr Kolaczkowski

• Created: 29/Oct/12 13:55
• Updated: 16/Apr/19 09:32
• Resolved: 28/May/13 22:53

Description

When experimenting with WideRow support, I noticed that it is not possible to specify a bounding SlicePredicate. This means that, no matter what you may wish, the entire Column Family will be used during a get_paged_slice call. This is unfortunate, if (for example) you are attempting to do MapReduce over a subset of your column range.

get_paged_slice should support a SlicePredicate, which will bound the column range over which data is returned. It seems like this SlicePredicate should be optional, so that existing code is not broken--when the SlicePredicate is not specified, have it default to going over the entire column range.

Issue Links

• relates to: CASSANDRA-5679 Wide Row calls map method once per column in Hadoop MapReduce